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� i � i i i i i i � i i � I♦ � � <br /> CaIscience Environ m al Laboratories, Inc. <br /> Analytical Quality Control Report <br /> Client: Environmental Audit, Inc. <br /> Work Order No.: 93-02-330 Reviewed by: y �y <br /> Method: EPA $020 <br /> Date(s) Analyzed: 03107-09193 Date Reviewed: <br /> Page: 2 of 5 <br /> Matrix Spike and_Spike Replicate Results <br /> [Spike] Replicate Control Limit Control Lima <br /> Anal)de fS-IpgIW Added (Matrix S is kel %REC [Matrix Splkel %REQ SBEC %RPD %RPD <br /> Toluene ND 500 382 76 437 87 70- 130 11 0-20 <br /> Chlorobenzene ND 500 381 76 44 1 88 70- 130 12 0- 20 <br /> Ethylbenzene ND 500 391 78 446 89 70- 130 11 0-20 <br /> Toluene ND 500 530 106 493 98 70- 130 8 0-20 <br /> Chlorobenzene ND 500 51 9 104 487 97 70 - 130 7 0-20 <br /> Ethylbenzene ND 500 525 105 503 101 70 - 130 4 0-20 <br /> Toluene ND 500 504 101 600 120 70- 130 19 0-20 <br /> Chlorobenzene ND 500 447 89 503 101 70 - 130 12 0-20 <br /> Ethylbenzene ND 500 45 8 92 544 109 70- 130 17 0-20 <br /> Toluene 12 9 500 63 8 102 61 1 96 70 - 130 6 0-20 <br /> Chlorobenzene ND 500 49 8 99 501 100 70- 130 1 0-20 <br /> Ethylbenzene 1 6 500 533 104 51 9 100 70- 130 4 0-20 <br /> Page 2 of 5 notes- <br /> 1 All concentration values contained herein are in ug/kg (ppb) <br />